Adiabatic Fermi acceleration of energetic particles between converging interplanetary shock waves

1976 ◽  
Vol 81 (1) ◽  
pp. 51-59 ◽  
Author(s):  
E. H. Levy ◽  
S. P. Duggal ◽  
M. A. Pomerantz
Keyword(s):  
Shock Waves ◽  
Interplanetary Shock ◽  
Energetic Particles ◽  
Fermi Acceleration

scholarly journals Investigating 1st and 2nd order Fermi acceleration of energetic particles by small-scale magnetic flux ropes at 1AU

2020 ◽  
Vol 1620 ◽  
pp. 012008
Author(s):  
J A le Roux ◽  
G M Webb ◽  
O V Khabarova ◽  
K T Van Eck ◽  
L-L Zhao ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Energetic Particles ◽  
Small Scale ◽  
Fermi Acceleration ◽  
Magnetic Flux Ropes ◽  
Flux Ropes

Interplanetary shock waves: Recent developments

1975 ◽  
Vol 17 (2-4) ◽  
pp. 277-325 ◽  
Author(s):  
Murray Dryer
Keyword(s):  
Shock Waves ◽  
Interplanetary Shock ◽  
Recent Developments

Turbulence associated with interplanetary shock waves within 1 AU

1984 ◽  
Vol 4 (2-3) ◽  
pp. 327-330 ◽  
Author(s):  
A. Luttrell ◽  
A.K. Richter ◽  
H. Rosenbauer ◽  
F.M. Neubauer
Keyword(s):  
Shock Waves ◽  
Interplanetary Shock

Fermi acceleration by shock waves

1979 ◽  
Author(s):  
R. D. Blandford
Keyword(s):  
Shock Waves ◽  
Fermi Acceleration

scholarly journals Element Abundances of Solar Energetic Particles and the Photosphere, the Corona, and the Solar Wind

Atoms ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 104 ◽  
Author(s):  
Donald V. Reames
Keyword(s):  
Solar Wind ◽  
Shock Waves ◽  
Solar Corona ◽  
Plasma Temperature ◽  
Energetic Particles ◽  
Solar Energetic Particles ◽  
Charge Ratio ◽  
Ambient Plasma ◽  
Element Abundances ◽  
Resonant Wave

From a turbulent history, the study of the abundances of elements in solar energetic particles (SEPs) has grown into an extensive field that probes the solar corona and physical processes of SEP acceleration and transport. Underlying SEPs are the abundances of the solar corona, which differ from photospheric abundances as a function of the first ionization potentials (FIPs) of the elements. The FIP-dependence of SEPs also differs from that of the solar wind; each has a different magnetic environment, where low-FIP ions and high-FIP neutral atoms rise toward the corona. Two major sources generate SEPs: The small “impulsive” SEP events are associated with magnetic reconnection in solar jets that produce 1000-fold enhancements from H to Pb as a function of mass-to-charge ratio A/Q, and also 1000-fold enhancements in 3He/4He that are produced by resonant wave-particle interactions. In large “gradual” events, SEPs are accelerated at shock waves that are driven out from the Sun by wide, fast coronal mass ejections (CMEs). A/Q dependence of ion transport allows us to estimate Q and hence the source plasma temperature T. Weaker shock waves favor the reacceleration of suprathermal ions accumulated from earlier impulsive SEP events, along with protons from the ambient plasma. In strong shocks, the ambient plasma dominates. Ions from impulsive sources have T ≈ 3 MK; those from ambient coronal plasma have T = 1 – 2 MK. These FIP- and A/Q-dependences explore complex new interactions in the corona and in SEP sources.

Ion acoustic-like waves observed by Ulysses near interplanetary shock waves in the three-dimensional heliosphere

1998 ◽  
Vol 103 (A4) ◽  
pp. 6531-6541 ◽  
Author(s):  
R. A. Hess ◽  
R. J. MacDowall ◽  
B. Goldstein ◽  
M. Neugebauer ◽  
R. J. Forsyth
Keyword(s):  
Shock Waves ◽  
Three Dimensional ◽  
Interplanetary Shock ◽  
Ion Acoustic
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